Bunn JDF-2S Installation & Operating Manual Download Page 2

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44744.2 070913

BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY

Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:

1) Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCP/MCA pod brewers thermal servers 

and Thermofresh servers (mechanical and digital)- 1 year parts and 1 year labor. 

2) All other equipment -  2 years parts and 1 year labor plus added warranties as specified below:

 

a) Electronic circuit and/or control boards - parts and labor for 3 years. 

 

b) Compressors on refrigeration equipment - 5 years parts and 1 year labor. 

 

c) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis - parts 

and labor for 4 years or 40,000 pounds of coffee, whichever comes first.

These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by it will be 

commercially free of defects in material and workmanship existing at the time of manufacture and appearing within the 

applicable warranty period. This warranty does not apply to any equipment, component or part that was not manufactured 

by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect, alteration, improper installation or operation, 

improper maintenance or repair, non periodic cleaning and descaling, equipment failures related to poor water quality, 

damage or casualty. In addition, the warranty does not apply to replacement of items subject to normal use including but 

not limited to user replaceable parts such as seals and gaskets. This warranty is conditioned on the Buyer 1) giving BUNN 

prompt notice of any claim to be made under this warranty by telephone at (217) 529-6601 or by writing to Post Office 

Box 3227, Springfield, Illinois 62708-3227; 2) if requested by BUNN, shipping the defective equipment prepaid to an 

authorized BUNN service location; and 3) receiving prior authorization from BUNN that the defective equipment is under 

warranty.

THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR ORAL, EX-

PRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER MERCHANTABILITY 

OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of BUNN are not authorized to make 

modifications to this warranty or to make additional warranties that are binding on BUNN. Accordingly, statements by such 

individuals, whether oral or written, do not constitute warranties and should not be relied upon.

If BUNN determines in its sole discretion that the equipment does not conform to the warranty, BUNN, at its exclusive op-

tion while the equipment is under warranty, shall either 1) provide at no charge replacement parts and/or labor (during the 

applicable parts and labor warranty periods specified above) to repair the defective components, provided that this repair 

is done by a BUNN Authorized Service Representative; or 2) shall replace the equipment or refund the purchase price for 

the equipment.

THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE OF THIS 

EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S SOLE OPTION 

AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.

In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales, loss of 

use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities 

or services, or any other special, incidental or consequential damages.

392, A Partner You Can Count On, Air Infusion, AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, Brew-

WISE, BrewWIZARD, BUNN Espress, BUNN Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with 

the stylized red line, BUNNlink, Bunn-OMatic, Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design, 

Cool Froth, DBC, Dr. Brew stylized Dr. design, Dual, Easy Pour, EasyClear, EasyGard,  FlavorGard, Gourmet Ice, Gourmet 

Juice, High Intensity, iMIX, Infusion Series, Intellisteam, My Café, Phase Brew, PowerLogic, Quality Beverage Equipment 

Worldwide, Respect Earth, Respect Earth with the stylized leaf and coffee cherry design, Safety-Fresh, savemycoffee.com, 

Scale-Pro, Silver Series, Single, Smart Funnel, Smart Hopper, SmartWAVE, Soft Heat, SplashGard, The Mark of Quality 

in Beverage Equipment Worldwide, ThermoFresh, Titan, trifecta, Velocity Brew, Air Brew, Beverage Bar Creator, Beverage 

Profit Calculator, Brew better, not bitter., BUNNSource, Coffee At Its Best, Cyclonic Heating System, Daypart, Digital Brew-

er Control, Element, Milk Texturing Fusion, Nothing Brews Like a BUNN, Pouring Profits, Signature Series, Sure Tamp, Tea 

At Its Best, The Horizontal Red Line, Ultra are either trademarks or registered trademarks of Bunn-O-Matic Corporation. 

The commercial trifecta® brewer housing configuration is a trademark of Bunn-O-Matic Corporation.

Summary of Contents for JDF-2S

Page 1: ... the latest revision of the Operating Manual or to view the Illustrated Parts Catalog Programming Manual or Service Manual please visit the Bunn O Matic website at www bunn com This is absolutely FREE and the quickest way to obtain the latest catalog and manual updates For Technical Service contact Bunn O Matic Corporation at 1 800 286 6070 44744 0002D 11 13 2012 Bunn O Matic Corporation ...

Page 2: ...g on BUNN Accordingly statements by such individuals whether oral or written do not constitute warranties and should not be relied upon If BUNN determines in its sole discretion that the equipment does not conform to the warranty BUNN at its exclusive op tion while the equipment is under warranty shall either 1 provide at no charge replacement parts and or labor during the applicable parts and lab...

Page 3: ...LL TIMES UNLESS ELECTRICALLY DISCONNECTED AVERTISSEMENT Pièces amovibles Ne pas utiliser l appareil lorsque le panneau est enlevé Risk de choc électrique Debrancher le cordon d alimentation de l appareil avant de faire l entretien Moving Parts Do not operate unit with this panel removed Risk Of Electrical Shock Disconnect power before servicing unit CHARGE Type R134A Amount 9 oz 255 gm Design Pres...

Page 4: ...ust be a NEMA 5 15R The 220 230V rated dispenser has an attached cord set and requires an attachment plug cap rated at least 230 volts ac 15 amp The attachment plug cap must meet with applicable national local electrical codes Refer to the data plate for exact electrical requirements ELECTRICAL HOOK UP CAUTION Improper electrical installation will damage electronic components 1 An electrician must...

Page 5: ...sing 5 screws provided DOOR COVER INSTALLATION 1 Install door cover by first plugging the door harness connector into the machine harness connector located at the bottom of the machine door P3577 P3579 JDF 2S JDF 4S Shown JDF 2S JDF 4S JDF 2S JDF 4S JDF 4S P3578 P3840 3 Install door cover 44744 2 110813 ...

Page 6: ...il you hear the water valve turn on For Portion Control machines press and hold the PLUS STOP switch 6 Monitor the water bath fill level until water starts to trickle from the overflow tube Then press the dispense button again to stop the fill process NOTE The fill timer may time out before filling is complete Press and hold the dispense button for 10 seconds to start again if needed FIG 1 Plumbin...

Page 7: ...ram Switch near main control board to the OFF position On older models without program switch set the Dispense Lockout Switch to the ON position 11 Replace the splash panel and drip tray 12 It will take several hours to create the ice bank required for full dispenser performance During this time some further trickling from the water bath is expected due to expansion caused by ice bank formation Wh...

Page 8: ...e dispenser near the Circuit Board This switch controls power to the water bath pump and relay contacts for the compressor and condenser fan motor Product Dispense Switch Mechanical Switch Machines Pressing and holding switch will initiate product flow from the respective nozzle releasing the switch will stop the flow FIG 10 Product Dispense Switches JDF 4S 44744 2 110813 ...

Page 9: ...tch will stop the flow Momentarily pressing this switch during a timed dispense will stop the flow C Chilled Water Dispense Switch Optional for JDF 4S only Pressing and holding switch will initiate chilled water flow from the nozzle releasing the switch will stop flow FIG 12 Product Dispense Switches JDF 4S OPERATING CONTROLS Continued FIG 13 Dispense Lockout Switch Dispense Lockout Switch This sw...

Page 10: ...9 Place a container under the dispense nozzle s and press the dispense button to confirm that the portion size is set correctly Repeat steps 1 8 if any changes are needed 10 Replace splash panel Note The portion control dispense can be cancelled during a dispense by pressing the dispense button again Note If a portion size is not set for a dispense head while in the portion control set up mode tha...

Page 11: ... 2S press and hold either dispense switch while plugging the dispenser into the power source For the JDF 4S press and hold two left dispense switches while plugging the dispenser into the power source Continue holding dispense switch s until all 4 temperature LED s on the circuit board start flashing slowly this takes about 5 seconds Release dispense switch s 5 Press and release any dispense switc...

Page 12: ...e sanitizing solution and a soft bristle brush 10 Clean the concentrate bottle s inlet adapter s using the sanitizing solution and a soft bristle brush 11 Replace the mixing element s and nozzle s 12 Fill approximately 128 ounces 3 8 L of clean sanitizing solution into clean empty concentrate container s Do not use the sanitizing solution used in step 10 Load the container s into the dispenser 13 ...

Page 13: ...e it on a flat work surface 9 Close the dispenser door 10 Remove the 4 screws securing the pump head 11 Gently pull the pump head apart 12 Gently pull the pump tube from around the pump s rotor 13 Release the clamps securing the old pump tubing to the plastic elbows 14 Pull the plastic elbows from the old pump tubing and discard the old pump tubing 15 Insert the plastic elbows into the new pump tu...

Page 14: ...o concentrate only for 3 seconds 4 Measure the water dispensed Suggested target is 3 ounces 1 ounce per second flow rate 5 Adjust the water flow rate Fig 17 clockwise to increase flow rate counterclockwise to decrease flow rate to the corresponding product mix ratio Chart below provides general brix instructions ADJUSTMENT OPTIONAL SETTINGS P3586 6 Repeat steps 1 through 5 as necessary until the c...

Page 15: ... container must be completely thawed and be within the temperature range of 35 40 degrees F 1 6 4 4 degrees C Product outside of this temperature range especially below will produce an out of brix drink Ambient Concentrates Optional 1 Install an Ambient Concentrate Conversion Kit BUNN O MATIC part number 33699 0002 per the instruc tions provided in the kit 2 Attach the concentrate product hose to ...

Page 16: ... 2 63 2 57 2 53 2 50 2 48 2 45 2 44 2 5 3 75 3 33 3 13 3 00 2 92 2 86 2 81 2 78 2 75 2 73 2 71 2 75 4 13 3 67 3 44 3 30 3 21 3 14 3 09 3 06 3 03 3 00 2 98 3 0 4 50 4 00 3 75 3 60 3 50 3 43 3 38 3 33 3 30 3 27 3 25 3 25 4 88 4 33 4 06 3 90 3 79 3 71 3 66 3 61 3 58 3 55 3 52 3 5 5 25 4 67 4 38 4 20 4 08 4 00 3 94 3 89 3 85 3 82 3 79 3 75 5 63 5 00 4 69 4 50 4 38 4 29 4 22 4 17 4 13 4 09 4 06 4 0 6 0...

Page 17: ...ers are equipped with an optional cold water dispense valve It is recommended to adjust the flow rate upon initial set up of the dispenser The adjustment for the cold water can be located inside the dispenser behind the right service panel The cold water dispense valve is mounted to the frame just above the ice bath Attached to this valve is a needle type adjustment valve Turn the adjustment clock...

Page 18: ...abinet thermistor circuit will flash 2 and 3 LED s 1 time every 3 seconds Shorted cabinet thermistor will turn 2 and 3 LED s on steady This mode disables the cabinet low temperature lockout fault 3 Cabinet Green When cabinet temperature is below 50 degrees F 4 Bath Red When bath temperature is above 34 degrees F Flashes slowly when compressor is in a 6 minute delay period Open bath thermistor circ...

Page 19: ...un under this condition 2 Bath Green When bath temperature is below 34 degrees F 3 Green When the compressor should be ON 4 Cabinet Red When the cabinet temperature is above 50 degrees F Flashes slowly when cabinet temperature exceeds 50 degrees F for 4 hours Dispense functions are locked out under this condition Power down the dispenser to reset Flashes rapidly if dispense is attempted in lockout...

Page 20: ...than ten minutes without a supply of water The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened This will help to avoid twists and kinks in the tubing Make certain that all plumbing connections are sealed and electrical connections tight and isolated WARNING Exercise extreme caution when servicing electrical equipment Unplug the dispenser when servicing excep...

Page 21: ...ter or adequate ventilation and space around machine Checkrefrigerationsystemforleaks and proper charge A Set switch to ON position B Check switch and harness for proper continuity Check all previous items that pre tain to refrigeration or cold water recirculation 1 Compressor ON OFF switch 2 Dirty condenser filter or fins 3 Condenser fan not running 4 Compressor relay not activat ing 5 Compressor...

Page 22: ... valve failed Place switch in ON position Checkswitchandharnessforproper continuity Check for ON position A Compressor relay contacts shorted replace relay B Recirculating pump replace or check for kinked flex line A Check for 120V or 230V power when dispensing If yes replace valve If no check harness for proper continuity Then replace circuit board if needed PROBLEM PROBABLE CAUSE REMEDY 44744 2 ...

Page 23: ...f pump rollers If coun terclockwise replace pump tubing If clockwise wire connection to pump is reversed Switch wires on terminals A Check speed setting on circuit board and increase speed turn clockwise B Check for d c power to pump motor If yes replace motor assy If no check harness for proper con tinuity Then replace circuit board if needed Water solenoid Concentrate out Product pump not pumpin...

Page 24: ...ng or broken Dispense solenoid Some expansion normal May fill drip tray during initial ice block formation Inspect or replace fittings clamps o rings solenoidsandquickdiscon nect fittings NOTE Dispense deck area slopes to drain tube that leads to the drip tray Installwaterpressureregulatorand reduce to 50 psi A Check all internal water connec tions B Check internal plumbing con nections Check for ...

Page 25: ...psi or higher and a minimum flow rate of 3 fl oz sec Over 100 psi install a pressure regulator and set to 50 psi A Perform3secondwaterdispense test Factory setting is 1 0 oz sec Acceptable water flow rate is 0 8 to 1 5 oz sec depending on the mix ratio 4 1 B Adjust water to proper mix ratio Once water is set adjust motor speed to achieve brix Checkforproperbrixratioperprod uct using Total Dispense...

Page 26: ...26 COOLANT SCHEMATIC DIAGRAM CONDENSER SUCTION ACCUMULATOR COMPRESSOR EVAPORATOR PROCESS TUBE FILTER DRYER 44744 2 062912 ...

Page 27: ...A B L1 WHI GRN BRN WHI A B 220 230V MODELS GRN YEL N L1 GND BRN BLU EMI FILTER 120 VOLTS AC or 220 230 VOLTS AC 2 WIRE SINGLE PHASE J1 1 J1 3 J5 1 J5 5 J4 1 J4 5 J3 1 J3 5 J2 1 J2 5 PUSH BUTTON OPTION Models with Membrane Switches Models with Mechanical Switches Models with Lited Doors STATIC SHIELD DISPENSE STATION 2 STOP PLUS LARGE MEDIUM SMALL STATIC SHIELD DISPENSE STATION 1 DISPENSE STATION 2...

Page 28: ...U EMI FILTER 120 VOLTS AC or 220 230 VOLTS AC 2 WIRE SINGLE PHASE J1 1 J1 3 J5 1 J5 5 J4 1 J4 5 J3 1 J3 5 J2 1 J2 5 PUSH BUTTON OPTION Models with Membrane Switches Models with Mechanical Switches STATIC SHIELD DISPENSE STATION 2 STOP PLUS LARGE MEDIUM SMALL STATIC SHIELD DISPENSE STATION 1 DISPENSE STATION 2 DISPENSE STATION 1 STOP PLUS LARGE MEDIUM SMALL DISPENSE STATIC SHIELD DISPENSE STATIC SH...

Page 29: ...I VIO WHI SOL J11 1 J11 5 J6 1 J6 5 BLK RED BLU YEL ORN BLK RED BLU YEL ORN AUXILLARY CONTROL BOARD J1 1 DISPENSE DISPENSE STATIC SHIELD STATIC SHIELD COLD WATER SWITCH DISPENSE STATION 4 J1 3 J5 1 J5 5 J4 1 J4 5 J3 1 J3 5 J2 1 J2 5 DISPENSE STATIC SHIELD COLD WATER SWITCH STOP PLUS LARGE MEDIUM SMALL STATIC SHIELD PUSH BUTTON OPTION STATIC SHIELD DISPENSE STATION 3 STOP PLUS LARGE MEDIUM SMALL ST...

Page 30: ... RED BLU YEL ORN BLK RED BLU YEL ORN AUXILLARY CONTROL BOARD J1 1 DISPENSE DISPENSE STATIC SHIELD STATIC SHIELD COLD WATER SWITCH DISPENSE STATION 4 J1 3 J5 1 J5 5 J4 1 J4 5 J3 1 J3 5 J2 1 J2 5 DISPENSE STATIC SHIELD COLD WATER SWITCH STOP PLUS LARGE MEDIUM SMALL STATIC SHIELD PUSH BUTTON OPTION STATIC SHIELD DISPENSE STATION 3 STOP PLUS LARGE MEDIUM SMALL STATIC SHIELD DISPENSE STATION 2 STOP PLU...

Page 31: ...nozzle as shown See Initial Fill 8 Place the program switch in the ON po sition 9 Hold the dispense switch until water be gins to flow into the tank approx 10 sec onds When tank is full water will begin pour out of the overflow tube Press the dispense button to stop the flow of water 10 Place the refrigeration switch in the ON position and the program switch in the OFF position 11 Insert juice con...

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